Glass-finishing machine.



No. 642,928. Patented Feb. 6, I900. A. B. SCOTT.

GLASS FINISHING MACHINE.

(Application filed Mar. 18, 1899.) (No Model.) 2 Sheets-Sheet (III/I1- W/mess es WWW No. 642,928. Patented Feb. 6, I900.

A. B. SCOTT.

GLASS FiNlSl-HNG MACHINE.

(Application filed Mar. 18, 1899.) (No Model.) 2 Sheets$heet 2.

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UNITED STATES PATENT Orrrcn.

ALVIN B. SCOTT, OF SUMMITVILLE, INDIANA.

GLASS-FINISHING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 642,928, dated February 6, 1900.

Application filed March 18, 1899. Serial No. 709,623. (No model.)

To all whom it may concern.-

Beitknown that I, ALVIN 13.800121, of Sn mmitville, county of Madison, and State of Indiana, have invented a certain new and useful Glass-Finishing lWIachine; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like figures refer to like parts.

The object of this invention is to finish glass jars, bottles, &c., in one operation and to give a smooth, positive, and regular cut or finish to the mouth of the article and to do all this very quickly without loss of material or breaking any of the work. To that end I provide in the mouth or neck of the mold an annular knife so mounted that it extends inward the thickness of the article to be made, whereby the cut will be on the inner rather than the outer edge of the article when made.

Another feature of the invention is to provide a plunger for cooperating with the knife in severing the overflow glass, the diameter of the plunger being less than the internal diameter of the knifeor of the mouth of the article to be made; but it must be large enough to sever the glass by cooperating with the knife. The result of this construction is that the plunger will not engage the edge of the knife to dull or break it, whereby the knife will last a long time, and there will be no necessity for stopping the plunger at a certain point and no damage if it goes farther into the bottle than needed. The advantage resulting from this arrangement of plunger and knife where the knife extends in for the thickness of the glass is that the plunger when inserted will not tend to push any of the glass back into the mold or jar being formed, because the plunger does not engage the glass excepting at the knife-edge. In any other construction not embodying this feature the plunger will force some of the glass back in to the mold or jar. Another result of this arrangement is that the knife can be placed below the mouth of the mold or Y anywhere in the neck of the mold, as it can a knifein the necks thereof for finishing the article.

The full nature of my invention will appear from the accompanying drawings and the description and claims following.

In the drawings, Figure 1 is a central vertical section of a mold, showing a glass jar being formed therein and being finished by the means I have invented. Fig. 2 is a central vertical section of the neck of the mold and the plunger, the glass being removed and other parts being broken away. Fig. 3 is a central vertical section of a portion of the mouth of a jar which has been finished by the means I here employ. Fig. 4: is a plan view of a series of molds and the means for operating the same and finishing the articles made therein. Fig. 5 is a cross-section of what is shown in Fig. 4, some parts being in side elevation. section of the means for mounting the plunger. Fig. 7 is a rear elevation of a portion of what is shown in Fig. 4:.

In detail, 1 represents the stationary half of a mold, and 2 the pivoted half thereof. The latter half has an arm 3, pivoted at 4: to the arm 5 from the stationaryhalf. The bottom piece 6 for closing the opening in the bottom of the mold is pivoted at 4 and is held in a vertically-closed position automatically by the weight 7. The upper end of the mold is built up as follows: I out the top of the mold short and flat and provide each half with an internally-threaded hole, as indicated in Fig. 1. On the upper end of each half I mount half of the annular knife 8, the same being a plate with a concave knife-edge and with a hole through it, and above this plate or knife I place the top plate 9, that forms the top or mouth of the mold. The knife-plate 8 and top plate 9 are held securely on the rest of the mold by the bolts 10. The knives are so formed that the cutting edge thereof will extend into the opening formed in the neck of the mold a distance equal to the thickness of the article to be formed. Therefore the internal diameter of the knife is equal to the internal diameter of the neck or mouth of the article to be formed. 11 is the article already blown, and 12 is the overflow therefrom.

In carrying out myinvention the jar or hot- Fig. 6 is a central vertical tle is blown in the ordinary manner and the overflow passes over the knife-edge and out at the top, as shown. After this has been done the plunger 13 is inserted by any suitable means into the mouth of the mold. This plunger is preferably tapering for guiding purposes, and its diameter is less than the internal diameter of the knife and of the mouth of the article to be formed, but very slightly less, only enough to permit its passage without wedging in the knife to destroy its edge and also to avoid the necessity of stopping the plunger at a certain point. The knife 8 extends in horizon tally,and with this arrange ment is preferably placed below the mouth of the mold. The severing of the overflow is effected by the cooperation of the side of the plunger and the knife, and since this severance occurs at the inner edge of the glass and the plunger does not engage the glass, excepting at the knife-point, the plunger will not force the glass back into the neck of the jar or mold. The cutting edge of the knife may be beveled or otherwise formed in order to give to the mouth of the bottle such form as may be desired. For mounting this plunger and adapting it for molds in series I have invented the means hereinafter described. A base la is provided, from which a stand 15 extends upward, and to this stand the stationary part 1 of the mold is secured, as seen in Fig. 5. The movable part 2 of the mold has an arm or tail 16, whereby said part is operated by the bent lever 17, pivoted between the ears 18 and operated by the depressible rod 19. Said rod passes through the guidearm 20 and floor 22, having on its upper end a pedal 23. When the foot is removed from the pedal 23, the part 2 of the mold will fall open, and when the foot is applied to the pedal 23 it will be closed. The floor is out out at 24: to permit the movement of the upper portion of that part of the mold. These parts described are duplicated for each mold and placed in a row, as shown in Fig. 4, and on the end piece 25 standards 26 are erected, carrying two horizontal guide-rods 27 and 28.

The plunger 13, as seen in Fig. 6, is secured on the lower end of the plunger-rod 29, that passes through the guide-arm 30 at its lower end and is secured at its upper end to the arm 31, and between the .two arms a spring 32 is placed for forcing the upper arm, and therefore the plunger, upward. The arm 30 is connected with a casting that is slidably mounted on the two guide-rods 27 and 28, as shown in Fig. 6, and in the upper end of this casting a vertical tube 33 is carried, to which the arm 31 is slidably mounted, it being provided on its rear side with a lock 34, that 8X tends into the slot 35in said tube 33,as shown. The spring 36 tends to hold said arm 31 upward as far as the slot 35 will permit. 37 is a pedal for depressing the arm 21, and therefore the plunger13, when it is desired to finish a jar or bottle. Said depression may be predetermined or adjusted by the block 38, secured to the floor, said block being made as high or as low as is necessary to effect a proper adjustment.

The upper guide-rod 28 is provided with recesses or notches 4O opposite the center of each mold, and when the mechanism carrying the plunger is slipped from one mold to another it is held in its proper place opposite a mold by a pawl or piece 42, carried on the lower end of the rod 13 that extends downward through the tube It is pressed downward into engagement with the notch by the spring ale and is withdrawn from the notch when one desires to remove the plunger by the hand-lever 4C5 atthe upper end of said tube 33,.

From this description it is observed that the mechanism carrying the plunger is slipped along the guideway provided from one mold to the next, and when it is in place opposite a mold the plunger 13 is inserted into the mold for severing the glass by applying the foot to the pedal 37. The exact extent of depression is not very material, and when the foot is removed the springs 32 and. 36 quickly withdraw the plunger. By operating the hand-lever the plunger-carrying mechanism is released.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is

1. A glass-finishing machine including a mold, an annular knife at the neck of the mold with its cutting edge extending into the mouth of the mold for the thickness of the article to be formed, and a plunger to cooperate with the knife for severing the glass.

2. A glass-finishing machine including a mold, a horizontally-extending annular knife secured to the neck of the mold whose inter nal diameter is substantially the same as the internal diameter of the neck of the article to be formed, and a plunger to cooperate with the knife for severing the glass.

3. A glass-finishing machine including a mold, an annular knife within the neck of the mold, and a plunger adapted to enter the mold after the article is blown and sever the overflow of glass by the cooperation of the side of the plunger with the knife.

4. A glass-finishing machine including a mold, an annular knife at the neck of the mold, and a plunger of less diameter than the internal diameter of the knife yet large enough to sever the overflow of the glass by its cooperation with the knife, whereby the plunger will not dull the edge of the knife.

5. A- glass-finishing machine including a mold, an annular knife mounted in the neck of the mold so as to extend inward for the thickness of the article to be made, and a plunger whose diameter is sufficiently less than the internal diameter of the neck of the article to be formed to permit it to enter the same after the article is blown and-by the cooperation of its side with the. knife to sever the overflow of glass.

6. A glass-finishing machine including a mold, a horizontal inwardly-extending annular knife secured in the neck of the mold below its mouth, and a plunger of such diameter that it can pass through the knife and cooperate with it to sever the overflow of glass.

7. A glass-finishing machine including a series of molds in line, a knife mounted in the neck of each mold, a guideway beside the series of molds, a frame slidably mounted on said guideway, and a plunger mounted in said frame whereby the plunger may be moved from one mold to another as desired.

S. A glass-finishing machine'includin g a series of molds in line, an annular knife in the neck of each mold, a guideway beside the series of molds, a stop in said guideway opposite each mold, a frame slidably mounted on the guideway, means in the frame for engaging said stop and holding the frame opposite a mold, and aplunger mounted in said frame for entering the mouth of the mold when operated.

9. A glass-finishing machine including a series of molds in line, an annular knife in the neck of each mold, a guideway beside said line of molds formed of two rods one above the other, the upper rod having a notch in its upper surface opposite each mold, a frame slidably mounted on said rods, a spring pawl or look mounted therein to engage the notch in the upper guide-rod, an arm extending from said frame over the center of the molds, and a vertically-operative plunger mounted in said arm.

10. A glass-finishing machine includinga series of molds in line, a guideway beside said molds with a notch on the upper side thereof opposite each mold, a frame slidably mounted on said guideway, a tube extending upward from said frame, an arm extending outward from the frame over the center of the molds, another arm mounted on the tube above so as to be vertically slidable, a plunger pivoted in said upper arm and guided by said lower arm, a spring for pressing said upper arm upward, means for depressing said upper arm and plunger, and a hand-operated pawl mechanism extending from the upper end of said tube down through it to engage the notches in the guideway and lock the mechanism in position opposite a mold.

In Witness whereof I have hereunto aflixed my signature in the presence of the witnesses herein named.

ALVIN B. SCOTT. Witnesses:

O. F. WILLIAMS, JoHN J. HOWARD. 

